TY JOUR TI MECHANICS OF CRUSHING MEDIUM IN BALL MILLS WITH LONGITUDINAL-TRANSVERSE MOTION OF GRINDING BODIES KW tube ball mill KW grinding bodies KW grinding KW milling KW stagnation zone JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Bogdanov, V.S. AU Fadin, Y.M. AU Doncova, Y.A. AU Bogdanov, N.E. AU Fet, S.K. PY 2018 IS 3 PB Belgorod State Technological University named after V.G. Shukhov